You can always add schools later. Send it in early, with your middle-of the road school choices, and then you can add additional schools later based on your MCAT scores. I f you submit early, they can start processing your app without a complete list of schools. Processing basically means checking your classes against your transcripts, so it doesn't matter if you don't yet know what a realistic range of schools is for you. JUST SUBMIT THE DAMN THING ASAP!!!! Or you could be really sorry you didn't. 😀
I sent mine in WAAAAAAY before I got my scores, but that's because I took the August MCAT, so had no choice. Well I guess I did have a choice, but it would have been a really poor choice to wait that long before submitting!! :wink: 😀